3 Types of Sandpaper and when and how to use them
Feb 23, 2014 · 30 and 60grit papers are used for rough sanding. 100 to 150grit sandpaper is for medium sanding. and 220grit sandpaper is used for finish sanding. Of course, this changes with the type of wood and whether the sanding is done by hand or with a machine. Sanding a soft wood with rough sandpaper could possibly tear the wood fibers (the grain).